#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
using namespace std;
int main()
{
	int n;
	cin >> n;
	for (int i = 2; i <= n; i++)
	{
		if (n % i == 0)
		{
			cout << n / i << endl;
			break;
		}
	}
	return 0;
}